An alleged Guatemalan drug kingpin has been arrested in San Diego, where he is facing federal charges related to the distribution of cocaine, the U.S. Attorney’s Office.

Eugenio Dario Molina-Lopez, 61, also known as “Don Dario,” had at one time a $10 million reward offered by the U.S. Department of State for information leading to his capture and conviction.

Molina-Lopez, who was indicted in 2019, allegedly led a drug trafficking organization called Los Huistas based out of northwest Guatemala on the border of Mexico.

“Los Huistas is a drug trafficking organization primarily based in the Huehuetenango region of Northwest Guatemala that borders Mexico and is engaged in a massive cocaine trafficking operation,” prosecutors said in a news release.

The U.S. Attorney’s Office said Molina-Lopez and Los Huistas were the focus of a multi-year law enforcement investigation. Details on the circumstances leading to his arrest were not disclosed.